1 /* Copyright 2008-2015 Freescale Semiconductor, Inc.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are met:
5 * * Redistributions of source code must retain the above copyright
6 * notice, this list of conditions and the following disclaimer.
7 * * Redistributions in binary form must reproduce the above copyright
8 * notice, this list of conditions and the following disclaimer in the
9 * documentation and/or other materials provided with the distribution.
10 * * Neither the name of Freescale Semiconductor nor the
11 * names of its contributors may be used to endorse or promote products
12 * derived from this software without specific prior written permission.
13 *
14 *
15 * ALTERNATIVELY, this software may be distributed under the terms of the
16 * GNU General Public License ("GPL") as published by the Free Software
17 * Foundation, either version 2 of that License or (at your option) any
18 * later version.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
33
34 #include <linux/init.h>
35 #include <linux/module.h>
36 #include <linux/of_address.h>
37 #include <linux/of_platform.h>
38 #include <linux/of_net.h>
39 #include <linux/of_mdio.h>
40 #include <linux/device.h>
41 #include <linux/phy.h>
42 #include <linux/netdevice.h>
43 #include <linux/phy_fixed.h>
44 #include <linux/etherdevice.h>
45 #include <linux/libfdt_env.h>
46
47 #include "mac.h"
48 #include "fman_mac.h"
49 #include "fman_dtsec.h"
50 #include "fman_tgec.h"
51 #include "fman_memac.h"
52
53 MODULE_LICENSE("Dual BSD/GPL");
54 MODULE_DESCRIPTION("FSL FMan MAC API based driver");
55
56 struct mac_priv_s {
57 struct device *dev;
58 void __iomem *vaddr;
59 u8 cell_index;
60 struct fman *fman;
61 struct device_node *internal_phy_node;
62 /* List of multicast addresses */
63 struct list_head mc_addr_list;
64 struct platform_device *eth_dev;
65 struct fixed_phy_status *fixed_link;
66 u16 speed;
67 u16 max_speed;
68
69 int (*enable)(struct fman_mac *mac_dev, enum comm_mode mode);
70 int (*disable)(struct fman_mac *mac_dev, enum comm_mode mode);
71 };
72
73 struct mac_address {
74 u8 addr[ETH_ALEN];
75 struct list_head list;
76 };
77
mac_exception(void * handle,enum fman_mac_exceptions ex)78 static void mac_exception(void *handle, enum fman_mac_exceptions ex)
79 {
80 struct mac_device *mac_dev;
81 struct mac_priv_s *priv;
82
83 mac_dev = handle;
84 priv = mac_dev->priv;
85
86 if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) {
87 /* don't flag RX FIFO after the first */
88 mac_dev->set_exception(mac_dev->fman_mac,
89 FM_MAC_EX_10G_RX_FIFO_OVFL, false);
90 dev_err(priv->dev, "10G MAC got RX FIFO Error = %x\n", ex);
91 }
92
93 dev_dbg(priv->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c",
94 __func__, ex);
95 }
96
set_fman_mac_params(struct mac_device * mac_dev,struct fman_mac_params * params)97 static int set_fman_mac_params(struct mac_device *mac_dev,
98 struct fman_mac_params *params)
99 {
100 struct mac_priv_s *priv = mac_dev->priv;
101
102 params->base_addr = (typeof(params->base_addr))
103 devm_ioremap(priv->dev, mac_dev->res->start,
104 resource_size(mac_dev->res));
105 if (!params->base_addr)
106 return -ENOMEM;
107
108 memcpy(¶ms->addr, mac_dev->addr, sizeof(mac_dev->addr));
109 params->max_speed = priv->max_speed;
110 params->phy_if = mac_dev->phy_if;
111 params->basex_if = false;
112 params->mac_id = priv->cell_index;
113 params->fm = (void *)priv->fman;
114 params->exception_cb = mac_exception;
115 params->event_cb = mac_exception;
116 params->dev_id = mac_dev;
117 params->internal_phy_node = priv->internal_phy_node;
118
119 return 0;
120 }
121
tgec_initialization(struct mac_device * mac_dev)122 static int tgec_initialization(struct mac_device *mac_dev)
123 {
124 int err;
125 struct mac_priv_s *priv;
126 struct fman_mac_params params;
127 u32 version;
128
129 priv = mac_dev->priv;
130
131 err = set_fman_mac_params(mac_dev, ¶ms);
132 if (err)
133 goto _return;
134
135 mac_dev->fman_mac = tgec_config(¶ms);
136 if (!mac_dev->fman_mac) {
137 err = -EINVAL;
138 goto _return;
139 }
140
141 err = tgec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
142 if (err < 0)
143 goto _return_fm_mac_free;
144
145 err = tgec_init(mac_dev->fman_mac);
146 if (err < 0)
147 goto _return_fm_mac_free;
148
149 /* For 10G MAC, disable Tx ECC exception */
150 err = mac_dev->set_exception(mac_dev->fman_mac,
151 FM_MAC_EX_10G_TX_ECC_ER, false);
152 if (err < 0)
153 goto _return_fm_mac_free;
154
155 err = tgec_get_version(mac_dev->fman_mac, &version);
156 if (err < 0)
157 goto _return_fm_mac_free;
158
159 dev_info(priv->dev, "FMan XGEC version: 0x%08x\n", version);
160
161 goto _return;
162
163 _return_fm_mac_free:
164 tgec_free(mac_dev->fman_mac);
165
166 _return:
167 return err;
168 }
169
dtsec_initialization(struct mac_device * mac_dev)170 static int dtsec_initialization(struct mac_device *mac_dev)
171 {
172 int err;
173 struct mac_priv_s *priv;
174 struct fman_mac_params params;
175 u32 version;
176
177 priv = mac_dev->priv;
178
179 err = set_fman_mac_params(mac_dev, ¶ms);
180 if (err)
181 goto _return;
182
183 mac_dev->fman_mac = dtsec_config(¶ms);
184 if (!mac_dev->fman_mac) {
185 err = -EINVAL;
186 goto _return;
187 }
188
189 err = dtsec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
190 if (err < 0)
191 goto _return_fm_mac_free;
192
193 err = dtsec_cfg_pad_and_crc(mac_dev->fman_mac, true);
194 if (err < 0)
195 goto _return_fm_mac_free;
196
197 err = dtsec_init(mac_dev->fman_mac);
198 if (err < 0)
199 goto _return_fm_mac_free;
200
201 /* For 1G MAC, disable by default the MIB counters overflow interrupt */
202 err = mac_dev->set_exception(mac_dev->fman_mac,
203 FM_MAC_EX_1G_RX_MIB_CNT_OVFL, false);
204 if (err < 0)
205 goto _return_fm_mac_free;
206
207 err = dtsec_get_version(mac_dev->fman_mac, &version);
208 if (err < 0)
209 goto _return_fm_mac_free;
210
211 dev_info(priv->dev, "FMan dTSEC version: 0x%08x\n", version);
212
213 goto _return;
214
215 _return_fm_mac_free:
216 dtsec_free(mac_dev->fman_mac);
217
218 _return:
219 return err;
220 }
221
memac_initialization(struct mac_device * mac_dev)222 static int memac_initialization(struct mac_device *mac_dev)
223 {
224 int err;
225 struct mac_priv_s *priv;
226 struct fman_mac_params params;
227
228 priv = mac_dev->priv;
229
230 err = set_fman_mac_params(mac_dev, ¶ms);
231 if (err)
232 goto _return;
233
234 if (priv->max_speed == SPEED_10000)
235 params.phy_if = PHY_INTERFACE_MODE_XGMII;
236
237 mac_dev->fman_mac = memac_config(¶ms);
238 if (!mac_dev->fman_mac) {
239 err = -EINVAL;
240 goto _return;
241 }
242
243 err = memac_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
244 if (err < 0)
245 goto _return_fm_mac_free;
246
247 err = memac_cfg_reset_on_init(mac_dev->fman_mac, true);
248 if (err < 0)
249 goto _return_fm_mac_free;
250
251 err = memac_cfg_fixed_link(mac_dev->fman_mac, priv->fixed_link);
252 if (err < 0)
253 goto _return_fm_mac_free;
254
255 err = memac_init(mac_dev->fman_mac);
256 if (err < 0)
257 goto _return_fm_mac_free;
258
259 dev_info(priv->dev, "FMan MEMAC\n");
260
261 goto _return;
262
263 _return_fm_mac_free:
264 memac_free(mac_dev->fman_mac);
265
266 _return:
267 return err;
268 }
269
start(struct mac_device * mac_dev)270 static int start(struct mac_device *mac_dev)
271 {
272 int err;
273 struct phy_device *phy_dev = mac_dev->phy_dev;
274 struct mac_priv_s *priv = mac_dev->priv;
275
276 err = priv->enable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
277 if (!err && phy_dev)
278 phy_start(phy_dev);
279
280 return err;
281 }
282
stop(struct mac_device * mac_dev)283 static int stop(struct mac_device *mac_dev)
284 {
285 struct mac_priv_s *priv = mac_dev->priv;
286
287 if (mac_dev->phy_dev)
288 phy_stop(mac_dev->phy_dev);
289
290 return priv->disable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
291 }
292
set_multi(struct net_device * net_dev,struct mac_device * mac_dev)293 static int set_multi(struct net_device *net_dev, struct mac_device *mac_dev)
294 {
295 struct mac_priv_s *priv;
296 struct mac_address *old_addr, *tmp;
297 struct netdev_hw_addr *ha;
298 int err;
299 enet_addr_t *addr;
300
301 priv = mac_dev->priv;
302
303 /* Clear previous address list */
304 list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) {
305 addr = (enet_addr_t *)old_addr->addr;
306 err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr);
307 if (err < 0)
308 return err;
309
310 list_del(&old_addr->list);
311 kfree(old_addr);
312 }
313
314 /* Add all the addresses from the new list */
315 netdev_for_each_mc_addr(ha, net_dev) {
316 addr = (enet_addr_t *)ha->addr;
317 err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr);
318 if (err < 0)
319 return err;
320
321 tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC);
322 if (!tmp)
323 return -ENOMEM;
324
325 ether_addr_copy(tmp->addr, ha->addr);
326 list_add(&tmp->list, &priv->mc_addr_list);
327 }
328 return 0;
329 }
330
331 /**
332 * fman_set_mac_active_pause
333 * @mac_dev: A pointer to the MAC device
334 * @rx: Pause frame setting for RX
335 * @tx: Pause frame setting for TX
336 *
337 * Set the MAC RX/TX PAUSE frames settings
338 *
339 * Avoid redundant calls to FMD, if the MAC driver already contains the desired
340 * active PAUSE settings. Otherwise, the new active settings should be reflected
341 * in FMan.
342 *
343 * Return: 0 on success; Error code otherwise.
344 */
fman_set_mac_active_pause(struct mac_device * mac_dev,bool rx,bool tx)345 int fman_set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx)
346 {
347 struct fman_mac *fman_mac = mac_dev->fman_mac;
348 int err = 0;
349
350 if (rx != mac_dev->rx_pause_active) {
351 err = mac_dev->set_rx_pause(fman_mac, rx);
352 if (likely(err == 0))
353 mac_dev->rx_pause_active = rx;
354 }
355
356 if (tx != mac_dev->tx_pause_active) {
357 u16 pause_time = (tx ? FSL_FM_PAUSE_TIME_ENABLE :
358 FSL_FM_PAUSE_TIME_DISABLE);
359
360 err = mac_dev->set_tx_pause(fman_mac, 0, pause_time, 0);
361
362 if (likely(err == 0))
363 mac_dev->tx_pause_active = tx;
364 }
365
366 return err;
367 }
368 EXPORT_SYMBOL(fman_set_mac_active_pause);
369
370 /**
371 * fman_get_pause_cfg
372 * @mac_dev: A pointer to the MAC device
373 * @rx_pause: Return value for RX setting
374 * @tx_pause: Return value for TX setting
375 *
376 * Determine the MAC RX/TX PAUSE frames settings based on PHY
377 * autonegotiation or values set by eththool.
378 *
379 * Return: Pointer to FMan device.
380 */
fman_get_pause_cfg(struct mac_device * mac_dev,bool * rx_pause,bool * tx_pause)381 void fman_get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause,
382 bool *tx_pause)
383 {
384 struct phy_device *phy_dev = mac_dev->phy_dev;
385 u16 lcl_adv, rmt_adv;
386 u8 flowctrl;
387
388 *rx_pause = *tx_pause = false;
389
390 if (!phy_dev->duplex)
391 return;
392
393 /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings
394 * are those set by ethtool.
395 */
396 if (!mac_dev->autoneg_pause) {
397 *rx_pause = mac_dev->rx_pause_req;
398 *tx_pause = mac_dev->tx_pause_req;
399 return;
400 }
401
402 /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE
403 * settings depend on the result of the link negotiation.
404 */
405
406 /* get local capabilities */
407 lcl_adv = linkmode_adv_to_lcl_adv_t(phy_dev->advertising);
408
409 /* get link partner capabilities */
410 rmt_adv = 0;
411 if (phy_dev->pause)
412 rmt_adv |= LPA_PAUSE_CAP;
413 if (phy_dev->asym_pause)
414 rmt_adv |= LPA_PAUSE_ASYM;
415
416 /* Calculate TX/RX settings based on local and peer advertised
417 * symmetric/asymmetric PAUSE capabilities.
418 */
419 flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
420 if (flowctrl & FLOW_CTRL_RX)
421 *rx_pause = true;
422 if (flowctrl & FLOW_CTRL_TX)
423 *tx_pause = true;
424 }
425 EXPORT_SYMBOL(fman_get_pause_cfg);
426
adjust_link_void(struct mac_device * mac_dev)427 static void adjust_link_void(struct mac_device *mac_dev)
428 {
429 }
430
adjust_link_dtsec(struct mac_device * mac_dev)431 static void adjust_link_dtsec(struct mac_device *mac_dev)
432 {
433 struct phy_device *phy_dev = mac_dev->phy_dev;
434 struct fman_mac *fman_mac;
435 bool rx_pause, tx_pause;
436 int err;
437
438 fman_mac = mac_dev->fman_mac;
439 if (!phy_dev->link) {
440 dtsec_restart_autoneg(fman_mac);
441
442 return;
443 }
444
445 dtsec_adjust_link(fman_mac, phy_dev->speed);
446 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
447 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
448 if (err < 0)
449 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
450 err);
451 }
452
adjust_link_memac(struct mac_device * mac_dev)453 static void adjust_link_memac(struct mac_device *mac_dev)
454 {
455 struct phy_device *phy_dev = mac_dev->phy_dev;
456 struct fman_mac *fman_mac;
457 bool rx_pause, tx_pause;
458 int err;
459
460 fman_mac = mac_dev->fman_mac;
461 memac_adjust_link(fman_mac, phy_dev->speed);
462
463 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
464 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
465 if (err < 0)
466 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
467 err);
468 }
469
setup_dtsec(struct mac_device * mac_dev)470 static void setup_dtsec(struct mac_device *mac_dev)
471 {
472 mac_dev->init = dtsec_initialization;
473 mac_dev->set_promisc = dtsec_set_promiscuous;
474 mac_dev->change_addr = dtsec_modify_mac_address;
475 mac_dev->add_hash_mac_addr = dtsec_add_hash_mac_address;
476 mac_dev->remove_hash_mac_addr = dtsec_del_hash_mac_address;
477 mac_dev->set_tx_pause = dtsec_set_tx_pause_frames;
478 mac_dev->set_rx_pause = dtsec_accept_rx_pause_frames;
479 mac_dev->set_exception = dtsec_set_exception;
480 mac_dev->set_allmulti = dtsec_set_allmulti;
481 mac_dev->set_tstamp = dtsec_set_tstamp;
482 mac_dev->set_multi = set_multi;
483 mac_dev->start = start;
484 mac_dev->stop = stop;
485 mac_dev->adjust_link = adjust_link_dtsec;
486 mac_dev->priv->enable = dtsec_enable;
487 mac_dev->priv->disable = dtsec_disable;
488 }
489
setup_tgec(struct mac_device * mac_dev)490 static void setup_tgec(struct mac_device *mac_dev)
491 {
492 mac_dev->init = tgec_initialization;
493 mac_dev->set_promisc = tgec_set_promiscuous;
494 mac_dev->change_addr = tgec_modify_mac_address;
495 mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address;
496 mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address;
497 mac_dev->set_tx_pause = tgec_set_tx_pause_frames;
498 mac_dev->set_rx_pause = tgec_accept_rx_pause_frames;
499 mac_dev->set_exception = tgec_set_exception;
500 mac_dev->set_allmulti = tgec_set_allmulti;
501 mac_dev->set_tstamp = tgec_set_tstamp;
502 mac_dev->set_multi = set_multi;
503 mac_dev->start = start;
504 mac_dev->stop = stop;
505 mac_dev->adjust_link = adjust_link_void;
506 mac_dev->priv->enable = tgec_enable;
507 mac_dev->priv->disable = tgec_disable;
508 }
509
setup_memac(struct mac_device * mac_dev)510 static void setup_memac(struct mac_device *mac_dev)
511 {
512 mac_dev->init = memac_initialization;
513 mac_dev->set_promisc = memac_set_promiscuous;
514 mac_dev->change_addr = memac_modify_mac_address;
515 mac_dev->add_hash_mac_addr = memac_add_hash_mac_address;
516 mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address;
517 mac_dev->set_tx_pause = memac_set_tx_pause_frames;
518 mac_dev->set_rx_pause = memac_accept_rx_pause_frames;
519 mac_dev->set_exception = memac_set_exception;
520 mac_dev->set_allmulti = memac_set_allmulti;
521 mac_dev->set_tstamp = memac_set_tstamp;
522 mac_dev->set_multi = set_multi;
523 mac_dev->start = start;
524 mac_dev->stop = stop;
525 mac_dev->adjust_link = adjust_link_memac;
526 mac_dev->priv->enable = memac_enable;
527 mac_dev->priv->disable = memac_disable;
528 }
529
530 #define DTSEC_SUPPORTED \
531 (SUPPORTED_10baseT_Half \
532 | SUPPORTED_10baseT_Full \
533 | SUPPORTED_100baseT_Half \
534 | SUPPORTED_100baseT_Full \
535 | SUPPORTED_Autoneg \
536 | SUPPORTED_Pause \
537 | SUPPORTED_Asym_Pause \
538 | SUPPORTED_FIBRE \
539 | SUPPORTED_MII)
540
541 static DEFINE_MUTEX(eth_lock);
542
543 static const u16 phy2speed[] = {
544 [PHY_INTERFACE_MODE_MII] = SPEED_100,
545 [PHY_INTERFACE_MODE_GMII] = SPEED_1000,
546 [PHY_INTERFACE_MODE_SGMII] = SPEED_1000,
547 [PHY_INTERFACE_MODE_TBI] = SPEED_1000,
548 [PHY_INTERFACE_MODE_RMII] = SPEED_100,
549 [PHY_INTERFACE_MODE_RGMII] = SPEED_1000,
550 [PHY_INTERFACE_MODE_RGMII_ID] = SPEED_1000,
551 [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000,
552 [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000,
553 [PHY_INTERFACE_MODE_RTBI] = SPEED_1000,
554 [PHY_INTERFACE_MODE_QSGMII] = SPEED_1000,
555 [PHY_INTERFACE_MODE_XGMII] = SPEED_10000
556 };
557
dpaa_eth_add_device(int fman_id,struct mac_device * mac_dev)558 static struct platform_device *dpaa_eth_add_device(int fman_id,
559 struct mac_device *mac_dev)
560 {
561 struct platform_device *pdev;
562 struct dpaa_eth_data data;
563 struct mac_priv_s *priv;
564 static int dpaa_eth_dev_cnt;
565 int ret;
566
567 priv = mac_dev->priv;
568
569 data.mac_dev = mac_dev;
570 data.mac_hw_id = priv->cell_index;
571 data.fman_hw_id = fman_id;
572
573 mutex_lock(ð_lock);
574 pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt);
575 if (!pdev) {
576 ret = -ENOMEM;
577 goto no_mem;
578 }
579
580 pdev->dev.parent = priv->dev;
581
582 ret = platform_device_add_data(pdev, &data, sizeof(data));
583 if (ret)
584 goto err;
585
586 ret = platform_device_add(pdev);
587 if (ret)
588 goto err;
589
590 dpaa_eth_dev_cnt++;
591 mutex_unlock(ð_lock);
592
593 return pdev;
594
595 err:
596 platform_device_put(pdev);
597 no_mem:
598 mutex_unlock(ð_lock);
599
600 return ERR_PTR(ret);
601 }
602
603 static const struct of_device_id mac_match[] = {
604 { .compatible = "fsl,fman-dtsec" },
605 { .compatible = "fsl,fman-xgec" },
606 { .compatible = "fsl,fman-memac" },
607 {}
608 };
609 MODULE_DEVICE_TABLE(of, mac_match);
610
mac_probe(struct platform_device * _of_dev)611 static int mac_probe(struct platform_device *_of_dev)
612 {
613 int err, i, nph;
614 struct device *dev;
615 struct device_node *mac_node, *dev_node;
616 struct mac_device *mac_dev;
617 struct platform_device *of_dev;
618 struct resource res;
619 struct mac_priv_s *priv;
620 u32 val;
621 u8 fman_id;
622 phy_interface_t phy_if;
623
624 dev = &_of_dev->dev;
625 mac_node = dev->of_node;
626
627 mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL);
628 if (!mac_dev) {
629 err = -ENOMEM;
630 goto _return;
631 }
632 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
633 if (!priv) {
634 err = -ENOMEM;
635 goto _return;
636 }
637
638 /* Save private information */
639 mac_dev->priv = priv;
640 priv->dev = dev;
641
642 if (of_device_is_compatible(mac_node, "fsl,fman-dtsec")) {
643 setup_dtsec(mac_dev);
644 priv->internal_phy_node = of_parse_phandle(mac_node,
645 "tbi-handle", 0);
646 } else if (of_device_is_compatible(mac_node, "fsl,fman-xgec")) {
647 setup_tgec(mac_dev);
648 } else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) {
649 setup_memac(mac_dev);
650 priv->internal_phy_node = of_parse_phandle(mac_node,
651 "pcsphy-handle", 0);
652 } else {
653 dev_err(dev, "MAC node (%pOF) contains unsupported MAC\n",
654 mac_node);
655 err = -EINVAL;
656 goto _return;
657 }
658
659 INIT_LIST_HEAD(&priv->mc_addr_list);
660
661 /* Get the FM node */
662 dev_node = of_get_parent(mac_node);
663 if (!dev_node) {
664 dev_err(dev, "of_get_parent(%pOF) failed\n",
665 mac_node);
666 err = -EINVAL;
667 goto _return_of_get_parent;
668 }
669
670 of_dev = of_find_device_by_node(dev_node);
671 if (!of_dev) {
672 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node);
673 err = -EINVAL;
674 goto _return_of_node_put;
675 }
676
677 /* Get the FMan cell-index */
678 err = of_property_read_u32(dev_node, "cell-index", &val);
679 if (err) {
680 dev_err(dev, "failed to read cell-index for %pOF\n", dev_node);
681 err = -EINVAL;
682 goto _return_of_node_put;
683 }
684 /* cell-index 0 => FMan id 1 */
685 fman_id = (u8)(val + 1);
686
687 priv->fman = fman_bind(&of_dev->dev);
688 if (!priv->fman) {
689 dev_err(dev, "fman_bind(%pOF) failed\n", dev_node);
690 err = -ENODEV;
691 goto _return_of_node_put;
692 }
693
694 of_node_put(dev_node);
695
696 /* Get the address of the memory mapped registers */
697 err = of_address_to_resource(mac_node, 0, &res);
698 if (err < 0) {
699 dev_err(dev, "of_address_to_resource(%pOF) = %d\n",
700 mac_node, err);
701 goto _return_of_get_parent;
702 }
703
704 mac_dev->res = __devm_request_region(dev,
705 fman_get_mem_region(priv->fman),
706 res.start, resource_size(&res),
707 "mac");
708 if (!mac_dev->res) {
709 dev_err(dev, "__devm_request_mem_region(mac) failed\n");
710 err = -EBUSY;
711 goto _return_of_get_parent;
712 }
713
714 priv->vaddr = devm_ioremap(dev, mac_dev->res->start,
715 resource_size(mac_dev->res));
716 if (!priv->vaddr) {
717 dev_err(dev, "devm_ioremap() failed\n");
718 err = -EIO;
719 goto _return_of_get_parent;
720 }
721
722 if (!of_device_is_available(mac_node)) {
723 err = -ENODEV;
724 goto _return_of_get_parent;
725 }
726
727 /* Get the cell-index */
728 err = of_property_read_u32(mac_node, "cell-index", &val);
729 if (err) {
730 dev_err(dev, "failed to read cell-index for %pOF\n", mac_node);
731 err = -EINVAL;
732 goto _return_of_get_parent;
733 }
734 priv->cell_index = (u8)val;
735
736 /* Get the MAC address */
737 err = of_get_mac_address(mac_node, mac_dev->addr);
738 if (err)
739 dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
740
741 /* Get the port handles */
742 nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
743 if (unlikely(nph < 0)) {
744 dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n",
745 mac_node);
746 err = nph;
747 goto _return_of_get_parent;
748 }
749
750 if (nph != ARRAY_SIZE(mac_dev->port)) {
751 dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n",
752 mac_node);
753 err = -EINVAL;
754 goto _return_of_get_parent;
755 }
756
757 for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) {
758 /* Find the port node */
759 dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i);
760 if (!dev_node) {
761 dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n",
762 mac_node);
763 err = -EINVAL;
764 goto _return_of_node_put;
765 }
766
767 of_dev = of_find_device_by_node(dev_node);
768 if (!of_dev) {
769 dev_err(dev, "of_find_device_by_node(%pOF) failed\n",
770 dev_node);
771 err = -EINVAL;
772 goto _return_of_node_put;
773 }
774
775 mac_dev->port[i] = fman_port_bind(&of_dev->dev);
776 if (!mac_dev->port[i]) {
777 dev_err(dev, "dev_get_drvdata(%pOF) failed\n",
778 dev_node);
779 err = -EINVAL;
780 goto _return_of_node_put;
781 }
782 of_node_put(dev_node);
783 }
784
785 /* Get the PHY connection type */
786 err = of_get_phy_mode(mac_node, &phy_if);
787 if (err) {
788 dev_warn(dev,
789 "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n",
790 mac_node);
791 phy_if = PHY_INTERFACE_MODE_SGMII;
792 }
793 mac_dev->phy_if = phy_if;
794
795 priv->speed = phy2speed[mac_dev->phy_if];
796 priv->max_speed = priv->speed;
797 mac_dev->if_support = DTSEC_SUPPORTED;
798 /* We don't support half-duplex in SGMII mode */
799 if (mac_dev->phy_if == PHY_INTERFACE_MODE_SGMII)
800 mac_dev->if_support &= ~(SUPPORTED_10baseT_Half |
801 SUPPORTED_100baseT_Half);
802
803 /* Gigabit support (no half-duplex) */
804 if (priv->max_speed == 1000)
805 mac_dev->if_support |= SUPPORTED_1000baseT_Full;
806
807 /* The 10G interface only supports one mode */
808 if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII)
809 mac_dev->if_support = SUPPORTED_10000baseT_Full;
810
811 /* Get the rest of the PHY information */
812 mac_dev->phy_node = of_parse_phandle(mac_node, "phy-handle", 0);
813 if (!mac_dev->phy_node && of_phy_is_fixed_link(mac_node)) {
814 struct phy_device *phy;
815
816 err = of_phy_register_fixed_link(mac_node);
817 if (err)
818 goto _return_of_get_parent;
819
820 priv->fixed_link = kzalloc(sizeof(*priv->fixed_link),
821 GFP_KERNEL);
822 if (!priv->fixed_link) {
823 err = -ENOMEM;
824 goto _return_of_get_parent;
825 }
826
827 mac_dev->phy_node = of_node_get(mac_node);
828 phy = of_phy_find_device(mac_dev->phy_node);
829 if (!phy) {
830 err = -EINVAL;
831 of_node_put(mac_dev->phy_node);
832 goto _return_of_get_parent;
833 }
834
835 priv->fixed_link->link = phy->link;
836 priv->fixed_link->speed = phy->speed;
837 priv->fixed_link->duplex = phy->duplex;
838 priv->fixed_link->pause = phy->pause;
839 priv->fixed_link->asym_pause = phy->asym_pause;
840
841 put_device(&phy->mdio.dev);
842 }
843
844 err = mac_dev->init(mac_dev);
845 if (err < 0) {
846 dev_err(dev, "mac_dev->init() = %d\n", err);
847 of_node_put(mac_dev->phy_node);
848 goto _return_of_get_parent;
849 }
850
851 /* pause frame autonegotiation enabled */
852 mac_dev->autoneg_pause = true;
853
854 /* By intializing the values to false, force FMD to enable PAUSE frames
855 * on RX and TX
856 */
857 mac_dev->rx_pause_req = true;
858 mac_dev->tx_pause_req = true;
859 mac_dev->rx_pause_active = false;
860 mac_dev->tx_pause_active = false;
861 err = fman_set_mac_active_pause(mac_dev, true, true);
862 if (err < 0)
863 dev_err(dev, "fman_set_mac_active_pause() = %d\n", err);
864
865 if (!is_zero_ether_addr(mac_dev->addr))
866 dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
867
868 priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
869 if (IS_ERR(priv->eth_dev)) {
870 dev_err(dev, "failed to add Ethernet platform device for MAC %d\n",
871 priv->cell_index);
872 priv->eth_dev = NULL;
873 }
874
875 goto _return;
876
877 _return_of_node_put:
878 of_node_put(dev_node);
879 _return_of_get_parent:
880 kfree(priv->fixed_link);
881 _return:
882 return err;
883 }
884
885 static struct platform_driver mac_driver = {
886 .driver = {
887 .name = KBUILD_MODNAME,
888 .of_match_table = mac_match,
889 },
890 .probe = mac_probe,
891 };
892
893 builtin_platform_driver(mac_driver);
894